42 is 30% of what number??? Add work plz

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08-05-2015
Mathematics

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42 is 30% of what number??? Add work plz

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naǫ naǫ · Answer 1 · 2015-05-09T22:34:46+02:00

naǫ naǫ

09-05-2015

x - the number

[tex]30\% x =42 \\ \frac{30}{100}x=42 \\ \frac{3}{10}x=42 \\ x=42 \times \frac{10}{3} \\ x=\frac{420}{3} \\ x=140[/tex]

42 is 30% of 140.

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